This free online wavelength calculator helps you identify the relationship between frequency and wavelength. Power to Voltage. Double-ridge waveguides are rectangular. It is a good starting point. EXAMPLE#1 (Doppler frequency calculation for moving reflector case): Speed of Wave source (m/sec) = 1000 , Operating Frequency (MHz) = 3000(i. The length of a half-wavelength dipole can be calculated by the given formula: L =. This general RF calculator includes calculations of path loss, VSWR and wavelength as well as conversions between many common terms used in the wireless industry. To calculate the power density of an antenna, one must measure the power/square cm, in space, from the center of the antenna. Frequency to Wavelength Calculator. = v2πf. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. One wavelength equals the speed of light divided by the frequency. The length of a half-wavelength dipole can be calculated by the given formula: L =. This relationship between frequency and wavelength is especially important to antenna design because the wavelength of a frequency is used to calculate many of the dimensions of an antenna’s design. f =c/ λ. Convert wavelength to frequency using this online Elite RF calculator. Verify the result with our sound wavelength calculator. 54 lambda. Formula. 4. The efficiency varies and generally gets lower with wider bandwidths. Impedance Return Path for RF / Micro-wave signals, they WILL find a Path. So, for example, if you have a GPS antenna and a WiFi 2. User assumes all risks for its use. The radar blind speed is the speed at which the target will not be visible to the radar. To find out how long to make each leg of a Dipole antenna, dividing the frequency in MHz into 468 will give the overall length. Published in association with. To calculate the skin effect (or skin depth), follow the given instructions: Multiply the frequency of the signal with the relative permeability of the conductor, the permeability of free space, and π. MHz. Microwaves are part of the electromagnetic spectrum and part of the RF range. However, this calculator converts the RF. The coax cable is a means for transferring your RF signal to the radiating portion of the radio system. Velocity Factor. A waveguide with a circular cross-section is known as a circular waveguide. 77 gigahertz and 17. 55 for most antennas); D — dish diameter; λ — wavelength; Φ — wave arrival angle;Microstrip Impedance Calculator. h is Planck's constant which is equal to 6. 185 megahertz is channel 19, the highway channel, of the Citizens Band Radio Service. )It may NOT be what we had in mind. they are stationary), but are the result of interference between incident and reflected waves along a transmission line. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. 2 ext { m/s} by default, the speed of sound, but feel free to enter a. Frequency Calculator. Frequency and Wavelength Calculation. Here is a nice wavelength calculator I just found to generate the table above. nl - Free - Mobile App for Android. IEEE defines it as "The loss between two isotropic radiators in free space, expressed as a power ratio. This is a true unbalanced antenna, with a feed impedance of around 50Ω and therefore a great. The wavelength of the signal that can propagate effectively inside a microstrip is called the guided wavelength. MHz. $\begingroup$ Its got nothing to do with whether the cage is grounded. λ (Lambda) = Wavelength in meters. Cavity resonance calculator. 1 Wavelength and how to measure a “wave’s length” In the world of RF and antennas, wavelength is a physical length of an electromagnetic wave measured at the same point at each cycle of the oscillating EM fields radiating out from the antenna. I leave it to other sources to provide the complex equations needed to precisely model coaxial cables. The formulae to calculate the dipole antenna and leg length are: L = 468 / f, l = L /2, where: L - Length of the dipole antenna in feet; l - Length of each arm of the dipole in feet; and. RF reflection results in attenuation and interference. Home › EIA WR 284 Calculator. A tool designed to calculate skin depth based on the conductive material being used and the frequency of the signal. Antenna gain is more typically listed in an antenna's specification sheet. Provide the value for the wave velocity in the medium. The length of RF waves impacts antenna design decisions. Choose a calculation to use the wavelength equation λ = v/f to solve for wavelength λ, velocity v or frequency f. As you’re probably aware, signals travel on PCB traces with a certain speed. 6127a<λ<3. I expect it will require a transmit signal attenuation of about 40 dB, to hide a card. The free space path loss is the loss in signal strength of a signal as it travels through free space. Wavelength is the length of one full wave in metres. 38 284. The guide wavelength is a function of operating wavelength (or frequency) and the lower cutoff wavelength, and is always longer than the wavelength would be in free-space. 8, we should expect it to actually resonate at around 115. Yes - Enter the Velocity Factor or, select one. f f = frequency. If the medium in which the light (or radio wave) is traveling is something other than free space, the velocity factor of the medium can slow down the speed of light. Write down the inductance L in henries. 11b channel 6): r = 17. ε 0 = 8. Below the cutoff frequency, power flow will be reduced. Enter the relative permitivity, width of the trace, the ground plane spacing, and the substrate thickness to calculate the characteristic impedance. Microstrip Impedance Calculator Enter the Height, Width and Permittivity to get the Impedance of the Microstrip Note : The unit of the height and width entered must be the same. This is a true unbalanced antenna, with a feed impedance of around 50Ω and therefore a great. Here is a list of some of the calculators in this app: Attenuator Calculators - Pi Attenuator Calculator - Tee Attenuator Calculator - Balanced Attenuator Calculator -. This page convert and calculate wavelength. European Radio Frequency Allocations. 3. RF Calculator Pro is a utility application consisting of various calculations, conversions and reference tables. Pasternack's Circular Waveguide Calculator will calculate the cutoff frequency for the device from its radius. This calculator clears up that confusion to make the conversion between wavelength and frequency easy. If you know the frequency, or if you just calculated it, you can find the energy of the photon with Planck's formula: E = h × f. Frequency (ν): The calculator returns the frequency in hertz. × 10 −12 F/m is the. The result will then be displayed in the answer box along with a dynamic conversion scale to show how wavelength varies for different frequencies, above and below the entered value. 3kHz -11. Calculate. Er. Try our […] Pasternack online RF calculators , conversions and formulas are well suited for radio frequency designers and engineers who need answers to complex RF questions. Radio Frequency is a range of frequencies in the electromagnetic spectrum. One for feet and the other for meters. Yes - Enter the Velocity Factor or, select one. )For a Signal Traveling in Free Space - *λ = c (Speed of Light) / f (frequency). × 10 −12 F/m is the. Frequency: Frequency at which the stripline is analyzed or. This speed can be calculated based on the frequency/wavelength of the wave and the Pulse Repetition Time. Image formation in a lens takes place by the refraction of light at its two bounding surfaces. The corresponding wavelength is called the EMI shield wavelength. 492 comes from multipling the frequency by the distance of a 1/2 wavelength. Where again the first uses wavelength and the second translates this into a frequency and a speed. On our example FR-4 PCB operating at 6 GHz, a wavelength may be calculated from the well known formula as, Where F = MHz, λ (wavelength) = meters, Er = 4. ε 0 = 8. Equation $$lambda = frac{c}{f sqrt{epsilon_{R}}}$$ or $$lambda = v_{p}frac{c}{f}$$ Where: $$lambda$$ = signal. The circular waveguide supports both TE (transverse electric) and TM (transverse magnetic) modes. To calculate the resonant frequency of a circuit composed of an inductor and a capacitor, follow these steps: Write down the capacitance C in farads. Stack Exchange Network. Skin Depth Calculator. 35 meters. Wavelength Calculator. To fully understand the results obtained by this calculator, please take a few minutes to read the. Enter the frequency number; then click on Calculate to see the harmonics. The Frequency from Wavelength calculator computes the RF frequency (ν) based on the wavelength (λ) and the speed of light (c). There is one more term which is often used interchangeably to mention RF and is called 'wavelength'. Is all that stitching shown in figure really necessary from an RF point of view? Probably not. LTE is the upgrade to both GSM/UMTS networks and CDMA2000 networks. 62607015E-34 m² · kg/s. **Note: All of our. Enter the Frequency to be converted. Cut-off Frequency (fc) GHz. Stripline Calculator. You can choose a wave velocity from the preset list, so you don't have to remember. Enter the values of operating frequency and relative dielectric constant then click on calculate to get the effective dielectric constant and guide wavelength for any slotline. A node is a point on a standing wave of minimum amplitude. At 0, 1/2 or 180 degrees, and back to 0 degrees of the wave, the current is at 0 or minimum. Calculating antenna gain in a phased arrayA directional coupler is a passive 4-port device used to sample a small amount of microwave power for measurement purposes. To calculate the height above ground, you need to subtract the result from a line drawn directly between the tops of the two towers. 440⋋ of director length, and the reflector to dipole spacing of 0. Conversion Tables. 7,506. The length of a dipole antenna is roughly equal to half the free-space wavelength of the target radio wave. 65 figure, then look up the data sheet for the speed of. As the name suggests, the length of this transmission line if fixed at a quarter of the wavelength (λ/4). Then, apply the formula: λ = v/f. Signals can be reflected whenever there is a mismatch in characteristic impedance. where h is the Planck's constant: h = 6. For example, 100 ppm of 100 MHz represents a variation in frequency of 10 kHz. Formula: Where, λ (Lambda) = Wavelength in meters. Pasternack's RF Free Space Path Loss (FSPL) Calculators is the ideal measurement tool that allows loss or attenuation of signal strength calculations between two antennas. 65c/frequency = 0. λ is the wavelength. This calculator calculates wavelength in meters from the radio frequency (RF) entered in units of MHz. f = v/lambda f = v/λ. The maximum and minimum frequencies are therefore 100. TX Output Power and RX Sensitivity need to set up based on the radio device’s actual link parameters based on the data sheet. The Antenna Near Field & Far Field Distance Calculator will calculate the distance of the three main EM (electromagnetic) fields which surround an antenna, as well as estimate the wavelength of the antenna at a given frequency. The gigahertz [GHz] to wavelength in nanometres [nm] conversion table and conversion steps are also listed. There are usually four radials, three being a minimum, but you could use up to six. This parameter is termed as the propagation delay. For example, let's calculate the size of the first Fresnel zone in the middle of a 2 km link, transmitting at 2. The substrate parameters (ε r and h) and the frequency of interest are required. Here is a little handy calculator that can calculate the wavelength of a frequency or frequency of a wavelength in several different units. Radar Range calculator. Unequal-split Power Divider Calculator. Coupling to Direct Line Insertion Loss Conversion Table for Directional Couplers. With our tool, you need to enter the. The fact that there is a 20 metre cable going to an earthing plug somewhere cannot possibly affect the interactions between an EM wave a couple of centimetres across and a hole in the mesh of comparable size. FREQUENCY TO WAVELENGTH CALCULATOR. RF calculations and conversions include metric-standard, link. Get the free "Frequency Calculator" widget for your website, blog, Wordpress, Blogger, or iGoogle. The resonant frequency of an LC Circuit is the frequency at which the inductive reactance and capacitive reactance of the LC circuit are equal. This blog post provides the formulas and an Excel spreadsheet. 85419 x 10. The Television. Applies to Transverse ElectroMagnetic propagation. 2 lb/kg and 1/ (2. 0x10^8ms^-1) to put into the formula. 2. The resonant frequency formula is: Where. Pasternack's RF Skin Depth Calculator are measurement calculation tools that allow you to input custom values, or choose from a list of commonly used material. Enter the gains of the transmitting and. Following equations are behind the calculations. , electromagnetically "short" antennas), the far and near regional boundaries are measured in terms of a simple ratio of the distance r from the radiating source to the wavelength λ of the radiation. These files are fairly large, some over 1 meg. It is also called Equivalent Isotropic Radiated Power. TX Power. 7/8 λ. Dipole Antenna Calculator. Based on the below fig, the formula for calculating the radius of each Fresnel Zone (1,2,3,. Enter the frequency number, by default 27. 8), the ratio of W/H for fifty-ohm microstrip is about 95%. This is related to the question how can electromagnetic waves reach a cell phone in faraday cage?, where in the answer it was stated that the holes (=size of the mesh) would need to be smaller than that of the wavelengths of the EM radiation used for cell phone signals for attenuation to 'start'. RF reflection becomes a concern when the trace or conductor’s length is equal to or larger than 1/4 of the signal’s wavelength. RF wavelength calculations can be made quite simple with two basic formulas. f 1 = Lower operational frequency in GHz. For electrically small antennas (where D < λ / 2) there are only two regions; near-field and far-field. Enter your desired frequency (MHz) of operation (i. I found one reference that: "Faraday cages are usually designed so that the largest mesh openings have a diameter of 1/10 of the shortest wavelength. com. This calculator calculates the maximum range of a radar based on the power transmitted, system gain and receiver sensitivity. The wavelength calculator solves for wavelength, velocity or frequency given 2 known variables. It's Opposite Day, Sponge Bob!Formula for Friis Transmission Calculator. The frequency and the wavelength are intimately related, so the operating frequency has just as much to do with the via spacing as the wavelength does. Maximum Unambiguous Range Calculator. It include antenna gain calculator, Antenna G/T ratio calculator, coaxial cable Impedance calculator, Noise temperature to Noise Figure Converter, Radar Range Calculator, resonant frequency calculator, wavelength to frequency calculator, receiver C/N ratio,. Find the wavelength of a radio wave with a frequency of 90 MHz. Stripline Crosstalk CalculatorMicrostrip Patch Antennas (or simply patch antenna) are increasingly useful because the antenna is printed directly onto a circuit board. Calculate the wavenumber using the appropriate equation. This property is commonly used when referring to the longest wavelengths, the radio spectrum from a few Hz up to the THz range. In the V2400 version, at present under construction, we have upgraded this calculator with a better user interface, making use of up-down controls to change the main input parameters. e. The formula to calculate the 1/4 wavelength of an antenna for a specific frequency is approximately: Wavelength (λ) = Speed of Light (c) / Frequency (f). ν = c λ The wavenumber is also a unit of frequency. 90 inches. The unambiguous range of a radar is the maximum range at which a target can be located so as to guarantee that the reflected signal/pulse from that target corresponds to the most recent transmitted pulse. Waves are signals that travel through air, water, light, and even. VSWR to Return Loss. If you have no particular preference within a given ham radio band, then simply enter its center frequency (i. The development of transmission line theory is presented in Section 3. To calculate the speed of sound in a medium, follow these steps: Find the sound's wavelength (λ) and frequency (f) in the medium. Items (3), (4), and (5) above represent RF or power losses which can be measured. - Tee Attenuator Calculator. Where C is the speed of light and is 3 x 10^8 meter/second. For example, a radar system sends out a pulsed radio wave at the carrier frequency from the transmitter, waits for returning echoes. This blog post provides the formulas and an Excel spreadsheet for calculating the wavelengths for each 20 MHz channel center frequency in the 2. The microstrip is a very simple yet useful way to create a transmission line with a PCB. Łucja Zaborowska, MD, PhD candidate. 14. When the waveguide radius a is constant, the order of the modes remains unchanged. 2 \text { m/s} by default, the speed of sound, but feel free to enter a. Useful for identifying the frequency range of a particular radio band. The equation for maximum spacing is a function of wavelength of operation and maximum look angle: Thus for a 30 degree look angle, dmax is (2/3)xlambda, while for a 60 degree look angle, dmax is 0. A television station broadcast Radio Frequency (RF) channel is allocated 6 MHz of bandwidth for over-the-air transmission in part of the VHF or UHF Radio Frequency Band. Thickness: Thickness of the stripline conductor. Note: If you select a waveguide size from the dropdown below, the broad wall width will be automatically calculated. Use the frequency calculator below to convert. Height: Height of the substrate. You may use the formula: Wavelength = c/f, where: c - The speed of light equal to 299,792,458 m/s; and; f - The frequency of the antenna. VSWR from Forward and Reverse Power. Np = Number of turns in the primary coil. Convert frequency to wavelength using this online RF calculator. If you want a thinner microstrip, you need to reduce the substrate height using one of the following solutions: Use a thinner 2-layer PCB, for example 0. f if the frequency of the RF signals. e. These radio waves are electromagnetic radiations that travel through the air at specific frequencies. 495⋋, the dipole length of 0. f – Frequency. where. λ - Wavelength. 979 meters. 4 (for typical FR-4. As a rule of thumb, a hole size of less than one-tenth of the wavelength is a good starting point. This frequency to wavelength calculator is especially useful for the calculation of the element length of the dipole antennas. Pasternack waveguides are structures for guiding electromagnetic waves, often called a waveguide transmission line. It supports both balanced and unbalanced lines. They hold the advantage over coaxial cable in terms of ease of manufacturing because of the absence of an inner conductor and shielding. At 870 MHz, λ is 345 mm; The rule of thumb for hole dimension is λ / 20 = 17 mm. With this calculator you can calculate RF parameters in a radar range depending on: Frequency. Skin depth and wavelength will depend on frequency and soil parameters, σ = soil conductivity and εWhip Antenna Calculator. Ratings and Reviews 5. 1-866-PASTERNACK (1-866-727-8376) US and Canada only • +1-949-261-1920 International • Email sales@pasternack. Download: RF & Microwave Toolbox lite APK (App) - RF ＆ Microwave Toolbox lite APK - Latest Version: 4. The frequency is expressed in Hertz (Hz). All are in Adobe PDF file format. Wavelength Calculator : Custom Search Home: Equivalents: Internet Glossary : Assists ham radio operators in converting a frequency to its wavelength in feet or inches. However. What is the wavelength of a radio wave (RF wave)? The wavelength of a radio wave depends on the frequency at which it travels. 150MHz is 1. Feel free to use the tool below and let us know if you have. ν = frequency ε r = relative permittivity A table of calculated values can be found here: Frequency - Wavelength Conversion Table Here are some familiar objects and their equivalent wavelength-related frequencies in air: Hummer H2 (189. When in doubt, use 1 for copper, . 60 Max. If you want to calculate. So for a 3G cell phone that operates at a frequency of 2. Verify the result with our sound wavelength calculator. Say the speed of sound in glass is 4540 ext { m/s} 4540 m/s, and the wavelength is 20. The Link Budget accounts for all factors that affect the transmission of a signal which would include gains and losses from amplifiers, the transmitter, various mediums, up to the sensitivity of the receiver. no of oscillations or cycles per second. To be more specific, it is the ratio of the electric field intensity E to the voltage V induced across the antenna output terminals. where. All Conversion Calculators. 8dB. where: λ – Wavelength; v – Propagation speed of the wave; and. How do you calculate radiated energy? The radiated energy can be calculated using the formula: Energy (J)=Power (W)×Time (s)Energy (J)=Power (W)×Time (s). Speed of light = (frequency) * (wavelength), where frequency is in Hz, wavelength in meters, and speed of light = 2. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. Calculators: • Wavelength • Free space path loss • Attenuators • Link budget • Resonance • VSWR • Reflection coefficient • Return loss •. 6 mm. Follow edited Mar 6, 2019 at 20:37. Characteristic Impedance. Following doppler frequency formula is used to calculate doppler frequency. Wire over Ground Calculator. “468” is the constant used to convert frequency in MHz to feet. Design, development and small scale manufacture of simple RF and Audio items. Following calculator calculates lowest cutoff frequency of rectangular waveguide as per TE10 mode and equation-2 that is Fc = c/2a , where 'c' is speed of light and 'a' is large dimension of waveguide. A quarter wave transformer is used to match two transmission lines with different impedances. Zp= Input/Primary impedance. Doppler shift is an apparent change in frequency (and, correspondingly, wavelength) due to the relative motion of two objects. The length of the dipole is usually one-half of the wavelength of the RF signals. The Television. A microstrip width calculator can calculate the width of a microstrip. The wavelength is the distance from one peak (crest) of the wave's electric field to the next, and is inversely proportional to the frequency of the wave. Wavelength and frequency are related by the. Input both parameters in the resonant frequency formula: f = 1 / (2π × √ (L × C)). 5 with no velocity factor. 65wavelength(in air) If you want more accuracy than that approximate 0. D is the inside diameter of the coax cable shield,. This is a required field. This example is for TE 1,0 (the mode with the lowest cutoff frequency) in WR284. The gain of the pyramidal horn antenna gain can be calculated by the following formula. Wye/Star to Delta Conversion Calculator. Also, use the reflector length of 0. εr (relative permittivity) This is a required field. AF - Antenna Factor. A single wavelength at this range is on the order of miles long. Dipole Antenna Calculator. Microstrip Impedance Calculator Enter the Height, Width and Permittivity to get the Impedance of the Microstrip Note : The unit of the height and width entered must be the same. Figure 1. Friis at Bell Labs in 1945. MICROWAVE CALCULATOR Free Mobile App for RF/Microwave Engineers. Wavelength refers to the distance completed by one full cycle of the electromagnetic wave, while frequency is the number of times the electromagnetic waves pass a given point in one second. Wavelength to Frequency Calculator. c = Speed of Light (299,792,458 m/s) f = Frequency. Noise Conversion Calculator. Helical or Helix Antennas transmit a circular polarized wave. Values for L and C will be calculated for the four topologies shown. 14. Therefore, solving for the following equation for a round aperture will, of course, yield different results. Our waveguides are low loss transmission lines capable of handling high power with high isolation. This tool calculates the matching network necessary to terminate a line of the specified characteristic impedence (Z o) in a specific complex load impedence (R L + jX L) at a specified frequency. f 2 = Upper operational frequency in GHz. mcalculator - android-design. Frequency Wavelength Calculator. LC Impedance matching network designer. 5 Hz This wavelength to frequency calculator helps determine the frequency of a waveform based on its wavelength. This will equal the length of each leg of the antenna. eA = Efficiency of the aperture (between 0 and 1) λ = Wavelength of radio wave in mm/cm/µm/metre. Radiated Magnetic Field from a Loop Antenna (Low Frequency, Close Proximity). Pasternack's RF Calculators and Conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. I've learned recently that lower frequency radio waves travel farther and have better object penetration than their higher frequency counterparts. Take an antenna for a low frequency in the kHz range. Pasternack's Coaxial Cable Impedance Calculator allows you to enter the Outer Diameter Dielectric width, Inner onductor Diameter width and either the Dielectric Constant or Velocity of Propagation (VoP) values in order to. Bureau/Office: MediaSkin Depth Calculator. milli. The impedance of that middle section can actually look very reactive as the length of the spacing between the grounding vias exceeds 1/8th of a wavelength. Find more Physics widgets in Wolfram|Alpha. So, we calculate lambda by having the speed ratio to the frequency(v/f). 7 mA Line of 230 meter 580 meter Sight Range Sensitivity -94 dBm -93. 998 × 10 8) G = Antenna gain (Linear value) The effective antenna aperture can be calculated by the following formula when the gain of the antenna is specified in dB (decibels). It only allows the propagation of microwave signals within a certain range of frequency. Quarter-wavelength in feet: 234 / frequency in MHz. Guide wavelength. . Converts a signal's wavelength to its frequency. 4 MHz (in free space). Input voltages are RMS values. Note: Units do not matter for this calculation as long as they are consistent. Advertisement. (you can try the values. Also, explore tools to convert gigahertz or wavelength in nanometres to other frequency wavelength units or learn more about frequency wavelength. 3 m 4. kHz MHz GHz. Power Combiners/RF Systems; RF Switches; TV Combiners; TV Diplexers; TV Filters. Time Delay. Antennas, Unit-Conversions, VSWR, RF power, DSP, EMC and much more RF related topics. 84 meters. 0. 9913 and LMR-400 are popular “low-loss” RG-8 types. Target range. All About Circuits is the largest online electrical engineering communities in the world with over 700K engineers, who collaborate every day to innovate, design, and create. Calculating skin depth requires the frequency of the AC signal and the resistivity and relative permeability of the conductive material. 3/4 λ. C = Speed of light. This is. Following formula/equations are used in the Whip. These radio waves are electromagnetic radiations that travel through the air at specific frequencies. 01 and 99. When calculating the wavelength, you will always have the speed of light (3. The frequency range can be in any hertz range (cycles) through gigahertz. When the dimension of an opening in an EMI shield is equal to one-half the wavelength of interference, then the shield radiates EMI and becomes useless. 5m which is 7 half wavelengths taken from the Multiple 1/2 Wavelengths table with a single 1/4 wavelength added as shown in the Coaxial Length Calculator. Wavelength to Frequency Calculator. Our RF and microwave calculators and converters will provide the figures you need for your radio frequency engineering needs. The Number that follows "WR" is the width of the waveguide opening in mils, divided by 10. Apr 15, 2023. 3. An antenna with single straight rod is the whip antenna. Then you learned poorly. Enter F and F (GHz) Metric (millimeters) English (inches) Advertisement. Following calculator calcultes RF frequency in MHz for the entered wavelength in meters. Although the sheet resistance of metalization always increases with frequency, the RF loss per wavelength can actually decrease. - Microstrip Patch Antenna Calculator - Wavelength Calculator - RF Power Density and many more. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. The reason it’s not exactly half wavelength (35 cm in this case) is because of the end effect* and a resulting multiplication by 0. In that case, we find that the angles at which we find constructive interference are given by the equation:Result. com; Products Products. The length of the dipole is usually one-half of the wavelength of the RF signals. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. Wavelength input (Meters): Frequency output (MHz) : EXAMPLE of Radio Frequency calculator: Wavelength (Input) = 0.